<template>
  <div class="container">
    <div class="app-container">
      <!-- default-expand-all自动展开子节点 -->
      <el-tree default-expand-all :data="depts" :props="defaultProps" :expand-on-click-node="false">
        <!-- 节点结构 -->
        <template v-slot="{data}">
          <el-row style="width: 100%;height: 40px" type="flex" align="middle" justify="space-between">
            <el-col>{{ data.name }}</el-col>
            <el-col :span="4">
              <span class="tree-manager">{{ data.managerName }}</span>
              <el-dropdown @command="operateDept($event, data.id)">
                <span class="el-dropdown-link">
                  操作<i class="el-icon-arrow-down el-icon--right" />
                </span>
                <el-dropdown-menu slot="dropdown">
                  <el-dropdown-item command="add">添加子部门</el-dropdown-item>
                  <el-dropdown-item command="edit">编辑部门</el-dropdown-item>
                  <el-dropdown-item command="delete">删除</el-dropdown-item>

                </el-dropdown-menu>
              </el-dropdown>
            </el-col>
          </el-row>
        </template>
      </el-tree>
    </div>
    <add-dept ref="addDept" :current-node-id="currentNodeId" :show-dialog.sync="showDialog" @updateDepartment="getDepartment" />
  </div>
</template>
<script>
import { getDepartments } from '@/api/department'
import { transListToTreeData } from '@/utils'
import AddDept from './components/add-dept'
export default {
  name: 'Department',
  components: {
    AddDept
  },
  data() {
    return {
      depts: [],
      showDialog: false,
      defaultProps: {
        children: 'children',
        label: 'name'
      },
      currentNodeId: null // 存储当前点击的id
    }
  },
  created() {
    this.getDepartment()
  },
  methods: {
    async getDepartment() {
      // 使用导入的api不用加this
      const res = await getDepartments()
      this.depts = transListToTreeData(res, 0)
    },
    operateDept(type, id) {
      if (type === 'add') {
        this.showDialog = true
        this.currentNodeId = id
      } else if (type === 'edit') {
        // 编辑部门场景
        this.showDialog = true
        this.currentNodeId = id // 记录id 要用它获取数据
        // 更新props- 异步动作
        // 直接调用了子组件的方法 同步的方法
        // 要在子组件获取数据
        // 父组件调用子组件的方法来获取数据
        this.$nextTick(() => {
          this.$refs.addDept.getDepartmentDetail() // this.$refs.addDept等同于子组件的this
        })
      }
    }
  }
}
</script>
<style scoped>
  .app-container {
    padding: 30px 140px;
    font-size: 14px;
}
  .tree-manager {
    width: 50px;
    display: inline-block;
    margin: 10px;
  }
</style>
